EP1188632A2 - Bremseingriff-Regelungsverfahren zur Verhinderung von Radschlupf - Google Patents
Bremseingriff-Regelungsverfahren zur Verhinderung von Radschlupf Download PDFInfo
- Publication number
- EP1188632A2 EP1188632A2 EP01119571A EP01119571A EP1188632A2 EP 1188632 A2 EP1188632 A2 EP 1188632A2 EP 01119571 A EP01119571 A EP 01119571A EP 01119571 A EP01119571 A EP 01119571A EP 1188632 A2 EP1188632 A2 EP 1188632A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel
- brake
- control method
- traction
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/175—Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1769—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS specially adapted for vehicles having more than one driven axle, e.g. four-wheel drive vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
Definitions
- the invention relates to a brake intervention control method for prevention of wheel slip on the wheels driven by a differential Motor vehicle, in particular an all-wheel drive motor vehicle, wherein due to a suitable signal that has poor traction Wheel is braked.
- a differential Motor vehicle in particular an all-wheel drive motor vehicle, wherein due to a suitable signal that has poor traction Wheel is braked.
- the technical environment is only an example referred to DE 195 44 445 A1, and continue to not Pre-published German patent application 199 46 463.4.
- differential locks When activated, the actual differential function prevented or at least weakened so that the wheel (s) have sufficient traction (Wheels) transmit the propulsive torque supplied by the motor vehicle drive unit can (can).
- This differential lock function is alternative but can also be achieved by a targeted wheel-specific brake intervention, namely if the wheel that tends to "spin" (i.e. one poor traction), braked or by the service brake of the motor vehicle is at least partially blocked.
- a wheel slip occurring on a single wheel can be detected this wheel is braked or blocked by applying brake pressure, around the propulsion torque provided by the drive unit the other driven wheel or wheels to deliver.
- the wheel slip that occurs Usually recognized by the fact that the corresponding wheel has a significantly higher one Speed than the other wheels of the vehicle. Now will this "spinning" wheel braked, so its speed naturally increases , whereupon a corresponding electronic control unit this wheel cannot detect any further slippage, so that in one natural control loop the associated wheel brake is released again.
- the vehicle can moved on, i.e. overcome the corresponding obstacle or the like but the driving behavior to be determined is unsatisfactory, after hereby a quasi jerky movement occurs.
- the obstacle or the like is namely on the corresponding, a wheel with poor traction alternating the Brake activated and released again.
- the object of the present invention is to provide a remedial measure for the problems described.
- the solution to this problem is characterized in that, starting from the first braking of this wheel and independent of further signals reflecting the wheel-specific traction, the applied braking pressure is maintained until the vehicle driving speed has exceeded a threshold value and / or until the vehicle has reached a certain value Distance traveled.
- a differential locking function is thus fulfilled Brake intervention alone, at least under certain operating conditions regulated by the wheel slip, but is activated after activation, which, for example, was still triggered by detected wheel slip, depending of other suitable boundary conditions for a certain Maintained duration.
- This is especially true at very low driving speeds by means of a suitable signal (e.g. from the wheel speed sensors) slip occurring on a driven wheel is recognized, so this wheel is braked as known.
- a suitable signal e.g. from the wheel speed sensors
- the stated threshold value for the driving speed is preferably above whose a due to poor traction on one Wheel activated brake intervention is released again, in the order of magnitude between 2 km / h and 5 km / h, i.e. once the vehicle is at that speed is moved, the wheel brake activated due to wheel slip or the like released again, whereas the wheel brake remains activated as long as the vehicle is traveling at a lower speed than the one mentioned Threshold moved.
- a brake intervention can already take place itself if the actual slip on a single wheel is not yet critical Size exceeded. In this case, a brake intervention represents or at the same time when a critical slip size is reached on a wheel continuous traction safely, which increases safety.
- the one with poor traction To make the wheel brake pressure variable in its size, depending on reasonable boundary conditions. Because it is advantageous if the corresponding wheel is actually only braked so far is that this poor traction is just being prevented or that only unwanted wheel slip is prevented. Up to a certain However, this wheel can then continue to contribute to propulsion. For this reason it is suggested that the brake pressure at the respective Wheel taking into account the drive torque supplied to this wheel is set.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Die Lösung dieser Aufgabe ist dadurch gekennzeichnet, dass ausgehend von einem erstmaligen Abbremsen dieses Rades und unabhängig von weiteren die radindividuelle Traktion wiederspiegelnden Signalen der aufgebrachte Bremsdruck solange aufrecht erhalten wird, bis die Fahrzeug-Fahrgeschwindigkeit einen Schwellwert überschritten hat und/oder bis das Fahrzeug eine bestimmte Wegstrecke zurückgelegt hat. Vorteilhafte Weiterbildungen sind Inhalt der Unteransprüche.
Claims (4)
- Bremseingriffs-Regelungsverfahren zur Verhinderung von Radschlupf an den über ein Differential angetriebenen Rädern eines Kraftfahrzeugs, insbesondere eines allradangetriebenen Kfz's, wobei aufgrund eines geeigneten Signals das eine mangelhafte Traktion aufweisende Rad abgebremst wird,
dadurch gekennzeichnet, dass ausgehend von einem erstmaligen Abbremsen dieses Rades und unabhängig von weiteren die radindividuelle Traktion wiederspiegelnden Signalen der aufgebrachte Bremsdruck solange aufrecht erhalten wird, bis die Fahrzeug-Fahrgeschwindigkeit einen Schwellwert überschritten hat und/oder bis das Fahrzeug eine bestimmte Wegstrecke zurückgelegt hat. - Bremseingriffs-Regelungsverfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der Schwellwert für die Fahrgeschwindigkeit in der Größenordnung zwischen 2 km/h und 5 km/h liegt und/oder dass die seit dem erstmaligen Abbremsen zurückgelegte Wegstrecke in der Größenordnung zwischen 3 m und 10 m liegt. - Bremseingriffs-Regelungsverfahren nach dem Oberbegriff des Anspruchs 1, wobei aus den Höhenstandsinformationen der einzelnen Räder auf eine mangelhafte Traktion zumindest eines der Räder geschlossen wird,
dadurch gekennzeichnet, dass ausgehend von einem erstmaligen Abbremsen dieses Rades der aufgebrachte Bremsdruck solange aufrecht erhalten wird, als die entsprechende Höhenstandsinformation im wesentlichen noch zutrifft. - Bremseingriffs-Regelungsverfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass der Bremsdruck am jeweiligen Rad unter Berücksichtigung des diesem Rad zugeführten Antriebsdrehmomentes eingestellt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10045225A DE10045225A1 (de) | 2000-09-13 | 2000-09-13 | Bremseingriffs-Regelungsverfahren zur Verhinderung von Radschlupf |
| DE10045225 | 2000-09-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1188632A2 true EP1188632A2 (de) | 2002-03-20 |
| EP1188632A3 EP1188632A3 (de) | 2002-11-20 |
| EP1188632B1 EP1188632B1 (de) | 2007-10-10 |
Family
ID=7656020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01119571A Expired - Lifetime EP1188632B1 (de) | 2000-09-13 | 2001-08-16 | Bremseingriff-Regelungsverfahren zur Verhinderung von Radschlupf |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1188632B1 (de) |
| DE (2) | DE10045225A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19544445A1 (de) | 1995-11-29 | 1997-06-05 | Teves Gmbh Alfred | Verfahren zur Verbesserung des Regelverhaltens eines ABS für geländegängige Fahrzeuge |
| DE19946463C1 (de) | 1999-09-28 | 2001-04-05 | Bayerische Motoren Werke Ag | Verfahren zur Bremseingriffsregelung und Steuereinrichtung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128583B1 (de) * | 1983-06-14 | 1988-12-14 | Robert Bosch Gmbh | Fahrzeug mit Vierradantrieb |
| DE3714330A1 (de) * | 1987-04-29 | 1988-11-10 | Porsche Ag | Anordnung zur steuerung der kraftuebertragung eines allradangetriebenen fahrzeugs |
| DE3840004A1 (de) * | 1988-11-26 | 1990-05-31 | Daimler Benz Ag | Kraftfahrzeug mit ueber differentialgetriebe od. dgl. angetriebenen raedern |
| DE3916046A1 (de) * | 1989-05-17 | 1990-11-22 | Bosch Gmbh Robert | Antiblockierregler oder antriebsschlupfregler |
| EP0739283B1 (de) * | 1994-01-13 | 1998-08-19 | KNORR-BREMSE SYSTEME FÜR NUTZFAHRZEUGE GmbH | Antriebsschlupfregelsystem mit pneumatischer bremsregelung für mit einem automatischen sperrdifferential ausgestattete fahrzeuge, insbesondere nutzfahrzeuge, und verfahren zum einlegen der differentialsperre |
| DE4418769C1 (de) * | 1994-05-28 | 1995-08-24 | Daimler Benz Ag | Verfahren zur Dämpfung von Regelschwingungen eines mittels Lowrad-Bremseneingriffen traktionsregelnden Systems in einem Kraftfahrzeug |
-
2000
- 2000-09-13 DE DE10045225A patent/DE10045225A1/de not_active Withdrawn
-
2001
- 2001-08-16 EP EP01119571A patent/EP1188632B1/de not_active Expired - Lifetime
- 2001-08-16 DE DE50113105T patent/DE50113105D1/de not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19544445A1 (de) | 1995-11-29 | 1997-06-05 | Teves Gmbh Alfred | Verfahren zur Verbesserung des Regelverhaltens eines ABS für geländegängige Fahrzeuge |
| DE19946463C1 (de) | 1999-09-28 | 2001-04-05 | Bayerische Motoren Werke Ag | Verfahren zur Bremseingriffsregelung und Steuereinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1188632B1 (de) | 2007-10-10 |
| DE50113105D1 (de) | 2007-11-22 |
| DE10045225A1 (de) | 2002-03-28 |
| EP1188632A3 (de) | 2002-11-20 |
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